/* ============================================
   OSINT Intelligence Platform - Complete CSS
   Production-Ready Styles with All Enhancements
   ============================================ */

/* ============================================
   1. CSS VARIABLES (Design Tokens)
   ============================================ */
:root {
    /* Colors - Background */
    --primary-bg: #0a0e27;
    --secondary-bg: #151b3d;
    --card-bg: #1a2142;
    
    /* Colors - Accent & Interactive */
    --accent-color: #00d4ff;
    --accent-hover: #00b8e6;
    --accent-rgb: 0, 212, 255;
    
    /* Colors - Text */
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    
    /* Colors - Borders & Dividers */
    --border-color: #2d3748;
    
    /* Colors - Status */
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --danger-color: #f56565;
    --info-color: #4299e1;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    --gradient-danger: linear-gradient(135deg, #fc5c7d 0%, #6a82fb 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.4);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 15px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-Index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 1000;
    --z-notification: 10000;
}

/* ============================================
   2. RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ============================================
   3. SCREEN MANAGEMENT
   ============================================ */
.screen {
    display: none;
    min-height: 100vh;
    animation: fadeIn 0.3s ease;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================
   4. LOGIN SCREEN
   ============================================ */
#loginScreen {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl);
}

/* Animated Background */
#loginScreen::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Login Container */
.login-container {
    position: relative;
    z-index: var(--z-base);
    max-width: 500px;
    width: 100%;
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

/* Login Header */
.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Error State */
.error-state {
    text-align: center;
    padding: var(--spacing-xl);
    background: rgba(245, 101, 101, 0.1);
    border: 1px solid rgba(245, 101, 101, 0.3);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.error-icon {
    width: 48px;
    height: 48px;
    stroke: var(--danger-color);
    stroke-width: 2;
    margin: 0 auto var(--spacing-md);
    display: block;
}

.error-title {
    color: var(--danger-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.error-message {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.retry-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: var(--danger-color);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.retry-btn:hover {
    background: #e53e3e;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.retry-btn:active {
    transform: translateY(0);
}

.retry-btn svg {
    width: 20px;
    height: 20px;
    stroke: white;
}

/* Login Options */
.login-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.login-option {
    text-align: center;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: var(--spacing-sm);
}

/* Connection Status */
.connection-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

.status-dot.offline {
    background: var(--danger-color);
    animation: none;
}

/* Security Notice */
.security-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    padding: 0.75rem;
    background: rgba(72, 187, 120, 0.1);
    border-radius: var(--radius-md);
    color: var(--success-color);
    font-size: 0.9rem;
}

.icon-small {
    width: 18px;
    height: 18px;
}

/* Login Features */
.login-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.feature-icon {
    width: 20px;
    height: 20px;
    stroke: var(--accent-color);
    stroke-width: 2;
    flex-shrink: 0;
}

/* ============================================
   5. SUBSCRIPTION CHECK SCREEN
   ============================================ */
#subscriptionCheckScreen {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl);
}

#subscriptionCheckScreen::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

.subscription-container {
    position: relative;
    z-index: var(--z-base);
    max-width: 1200px;
    width: 100%;
}

.subscription-view {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: fadeIn 0.3s ease;
}

.subscription-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.subscription-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
}

.subscription-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Active Subscription Info */
.subscription-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.info-card {
    background: var(--secondary-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-base);
}

.info-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.info-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.pricing-card {
    background: var(--secondary-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.pricing-card:hover::before {
    left: 100%;
}

.pricing-card.featured {
    border-color: var(--accent-color);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, var(--secondary-bg) 100%);
}

.featured-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--gradient-accent);
    color: var(--text-primary);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: var(--shadow-md);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.price {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-xs);
}

.currency {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1;
}

.period {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 1.5rem;
}

.pricing-features {
    margin-bottom: var(--spacing-xl);
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: var(--text-secondary);
}

.check-icon {
    width: 20px;
    height: 20px;
    stroke: var(--success-color);
    stroke-width: 2.5;
    flex-shrink: 0;
}

.pricing-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-accent);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.pricing-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 20px rgba(var(--accent-rgb), 0.3);
}

.pricing-btn:active {
    transform: scale(0.98);
}

.pricing-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================
   6. BUTTONS
   ============================================ */
.primary-btn {
    width: 100%;
    max-width: 400px;
    margin: 0 auto var(--spacing-md);
    display: block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-accent);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.primary-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 20px rgba(var(--accent-rgb), 0.3);
}

.primary-btn:active {
    transform: scale(0.98);
}

.secondary-btn {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.secondary-btn:hover {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.secondary-btn:active {
    transform: scale(0.98);
}

/* ============================================
   7. DASHBOARD - NAVBAR
   ============================================ */
.navbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-md);
}

.nav-brand h2 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info span {
    color: var(--text-secondary);
}

.tier-badge {
    background: var(--gradient-accent);
    color: var(--text-primary);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
}

.logout-btn {
    padding: 0.6rem 1.2rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 0.95rem;
    font-weight: 500;
}

.logout-btn:hover {
    border-color: var(--danger-color);
    color: var(--danger-color);
}

/* ============================================
   8. DASHBOARD - LAYOUT
   ============================================ */
.dashboard-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: calc(100vh - 73px);
}

/* Sidebar */
.sidebar {
    background: var(--secondary-bg);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-xl) var(--spacing-lg);
}

.sidebar-section {
    margin-bottom: var(--spacing-xl);
}

.sidebar-section h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.stat-card {
    background: var(--card-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.stat-card:hover {
    border-color: var(--accent-color);
    transform: translateX(2px);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.sidebar-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
    font-size: 0.9rem;
    text-align: left;
}

.sidebar-btn:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: translateX(5px);
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl);
    background: var(--primary-bg);
    overflow-y: auto;
}

.welcome-section {
    margin-bottom: var(--spacing-xl);
}

.welcome-section h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ============================================
   9. TOOLS GRID
   ============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.tool-card:hover::before {
    left: 100%;
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    filter: grayscale(30%);
}

.tool-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.tool-btn {
    width: 100%;
    padding: 0.85rem;
    background: var(--gradient-accent);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.tool-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 20px rgba(var(--accent-rgb), 0.3);
}

.tool-btn:active {
    transform: scale(0.98);
}

/* ============================================
   10. ACTIVITY SECTION
   ============================================ */
.activity-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.activity-section h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.empty-state {
    color: var(--text-secondary);
    text-align: center;
    padding: var(--spacing-xl);
}

.activity-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--secondary-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.activity-item:hover {
    border-color: var(--accent-color);
    transform: translateX(2px);
}

.activity-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.activity-tool {
    font-weight: 600;
    color: var(--text-primary);
}

.activity-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.activity-status {
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
}

.activity-status.success {
    background: rgba(72, 187, 120, 0.2);
    color: var(--success-color);
}

.activity-status.failed {
    background: rgba(245, 101, 101, 0.2);
    color: var(--danger-color);
}

/* ============================================
   11. LOADING OVERLAY
   ============================================ */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: var(--z-modal);
}

.loading-overlay.active {
    display: flex;
}

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-top: var(--spacing-md);
    animation: fadeInOut 1.5s ease-in-out infinite;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ============================================
   12. NOTIFICATION TOAST SYSTEM
   ============================================ */
.notification-toast {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    max-width: 400px;
    min-width: 300px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: var(--z-notification);
    transform: translateX(calc(100% + var(--spacing-xl)));
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    opacity: 0;
}

.notification-toast.show {
    transform: translateX(0);
    opacity: 1;
}

.notification-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.notification-message {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.4;
    flex: 1;
}

.notification-success {
    border-left: 4px solid var(--success-color);
    background: linear-gradient(to right, rgba(72, 187, 120, 0.1), var(--card-bg));
}

.notification-error {
    border-left: 4px solid var(--danger-color);
    background: linear-gradient(to right, rgba(245, 101, 101, 0.1), var(--card-bg));
}

.notification-warning {
    border-left: 4px solid var(--warning-color);
    background: linear-gradient(to right, rgba(237, 137, 54, 0.1), var(--card-bg));
}

.notification-info {
    border-left: 4px solid var(--info-color);
    background: linear-gradient(to right, rgba(66, 153, 225, 0.1), var(--card-bg));
}

/* ============================================
   13. FOCUS & ACCESSIBILITY
   ============================================ */
button:focus-visible,
.tool-btn:focus-visible,
.pricing-btn:focus-visible,
.primary-btn:focus-visible,
.secondary-btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* ============================================
   14. SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* ============================================
   15. TEXT SELECTION
   ============================================ */
::selection {
    background: var(--accent-color);
    color: var(--primary-bg);
}

::-moz-selection {
    background: var(--accent-color);
    color: var(--primary-bg);
}

/* ============================================
   16. RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .dashboard-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar {
        padding: var(--spacing-md);
    }
    
    .nav-right {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-end;
    }
    
    .main-content {
        padding: var(--spacing-lg);
    }
    
    .welcome-section h1 {
        font-size: 2rem;
    }

    .subscription-view {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .subscription-header h1 {
        font-size: 2rem;
    }

    .subscription-info {
        grid-template-columns: 1fr;
    }

    .notification-toast {
        top: var(--spacing-md);
        right: var(--spacing-md);
        left: var(--spacing-md);
        max-width: none;
    }
    
    .login-features {
        gap: 0.75rem;
    }
    
    .feature-item {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }

    .subscription-header h1 {
        font-size: 1.75rem;
    }

    .amount {
        font-size: 2.5rem;
    }
}

/* ============================================
   17. REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   18. PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .sidebar,
    .loading-overlay,
    .notification-toast {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ============================================
   19. UTILITY CLASSES
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--secondary-bg) 0%, var(--border-color) 50%, var(--secondary-bg) 100%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.session-warning {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(237, 137, 54, 0.95);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: calc(var(--z-notification) - 1);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateX(-50%) translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

/* ============================================
   END OF STYLES
   ============================================ */